The LEDVANCE 51994 QHE1X320MH is a high-performance electronic ballast designed for 320W metal halide lamps. Operating within a voltage range of 208-277V, this ballast ensures reliable performance and energy efficiency. It features a compact design for easy installation and is compatible with various lighting systems. The QHE1X320MH meets industry standards for safety and performance, making it suitable for commercial lighting applications. With its advanced technology, this ballast provides consistent light output and extends the lifespan of your lamps, reducing the need for frequent replacements.